.mask{
	cursor: row-resize;
	position: absolute;
	background-color: rgba(0, 0, 0, 0.6);
	left: 0;
    right: 0;
    touch-action: none
}

.mask-top{
    top: 0;
    border-bottom: 5px solid #177b1f
}

.mask-bottom{
	border-top: 5px solid #177b1f;
	bottom: 0;
}